./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 08:54:13,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:54:13,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:54:13,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:54:13,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:54:13,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:54:13,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:54:13,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:54:13,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:54:13,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:54:13,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:54:13,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:54:13,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:54:13,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:54:13,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:54:13,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:54:13,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:54:13,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:54:13,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:54:13,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:54:13,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:54:13,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:54:13,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:54:13,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:54:13,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:54:13,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:54:13,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:54:13,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:54:13,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:54:13,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:54:13,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:54:13,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:54:13,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:54:13,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:54:13,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:54:13,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:54:13,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:54:13,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:54:13,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:54:13,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:54:13,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:54:13,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 08:54:13,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:54:13,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:54:13,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:54:13,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:54:13,478 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:54:13,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:54:13,478 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:54:13,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 08:54:13,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:54:13,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:54:13,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:54:13,480 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 08:54:13,481 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 08:54:13,481 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 08:54:13,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:54:13,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 08:54:13,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 08:54:13,482 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:54:13,482 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:54:13,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:54:13,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:54:13,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:54:13,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:54:13,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:54:13,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:54:13,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:54:13,484 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 08:54:13,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 08:54:13,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 08:54:13,484 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2019-11-20 08:54:13,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:54:13,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:54:13,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:54:13,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:54:13,696 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:54:13,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-20 08:54:13,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/data/b1bbf13b8/e702c3dc11f94dcd93f9aca086a4b082/FLAG744ba9ec8 [2019-11-20 08:54:14,242 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:54:14,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2019-11-20 08:54:14,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/data/b1bbf13b8/e702c3dc11f94dcd93f9aca086a4b082/FLAG744ba9ec8 [2019-11-20 08:54:14,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/data/b1bbf13b8/e702c3dc11f94dcd93f9aca086a4b082 [2019-11-20 08:54:14,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:54:14,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 08:54:14,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:54:14,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:54:14,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:54:14,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:54:14" (1/1) ... [2019-11-20 08:54:14,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27436bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:14, skipping insertion in model container [2019-11-20 08:54:14,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:54:14" (1/1) ... [2019-11-20 08:54:14,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:54:14,630 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:54:15,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:54:15,087 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:54:15,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:54:15,221 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:54:15,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15 WrapperNode [2019-11-20 08:54:15,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:54:15,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:54:15,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:54:15,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:54:15,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... [2019-11-20 08:54:15,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:54:15,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:54:15,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:54:15,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:54:15,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:54:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 08:54:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:54:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 08:54:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 08:54:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 08:54:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 08:54:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 08:54:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure knapsack [2019-11-20 08:54:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 08:54:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 08:54:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 08:54:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 08:54:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 08:54:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 08:54:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 08:54:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 08:54:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 08:54:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 08:54:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 08:54:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 08:54:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 08:54:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 08:54:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 08:54:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 08:54:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 08:54:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 08:54:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 08:54:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 08:54:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 08:54:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 08:54:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 08:54:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 08:54:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 08:54:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 08:54:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 08:54:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 08:54:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 08:54:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 08:54:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 08:54:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 08:54:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 08:54:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 08:54:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 08:54:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 08:54:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 08:54:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 08:54:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 08:54:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 08:54:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 08:54:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 08:54:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 08:54:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 08:54:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 08:54:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 08:54:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 08:54:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 08:54:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 08:54:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 08:54:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 08:54:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 08:54:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 08:54:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 08:54:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 08:54:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure knapsack [2019-11-20 08:54:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 08:54:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 08:54:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 08:54:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 08:54:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 08:54:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 08:54:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:54:16,335 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:54:16,336 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 08:54:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:16 BoogieIcfgContainer [2019-11-20 08:54:16,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:54:16,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:54:16,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:54:16,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:54:16,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:54:14" (1/3) ... [2019-11-20 08:54:16,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d07e1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:54:16, skipping insertion in model container [2019-11-20 08:54:16,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:15" (2/3) ... [2019-11-20 08:54:16,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d07e1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:54:16, skipping insertion in model container [2019-11-20 08:54:16,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:16" (3/3) ... [2019-11-20 08:54:16,348 INFO L109 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2019-11-20 08:54:16,357 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:54:16,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2019-11-20 08:54:16,376 INFO L249 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2019-11-20 08:54:16,393 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:54:16,394 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 08:54:16,402 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:54:16,402 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:54:16,402 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:54:16,402 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:54:16,403 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:54:16,403 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:54:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2019-11-20 08:54:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 08:54:16,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:54:16,422 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:54:16,422 INFO L410 AbstractCegarLoop]: === Iteration 1 === [knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr16REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 08:54:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:54:16,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035194, now seen corresponding path program 1 times [2019-11-20 08:54:16,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:54:16,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1025674808] [2019-11-20 08:54:16,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:54:16,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 08:54:16,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:54:16,821 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_34|], 4=[|v_#valid_45|]} [2019-11-20 08:54:16,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:54:16,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:54:16,841 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:54:16,915 INFO L343 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2019-11-20 08:54:16,915 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2019-11-20 08:54:16,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:54:16,950 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:16,975 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:16,976 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2019-11-20 08:54:16,976 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:54:17,017 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:17,020 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 08:54:17,020 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:41, output treesize:39 [2019-11-20 08:54:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:54:17,086 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:54:17,232 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:17,232 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2019-11-20 08:54:17,233 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:54:17,257 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:17,260 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 08:54:17,261 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 08:54:17,262 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:54:17,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:17,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:54:17,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:54:17,318 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-11-20 08:54:17,319 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:47, output treesize:11 [2019-11-20 08:54:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:54:17,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1025674808] [2019-11-20 08:54:17,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:54:17,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 08:54:17,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630495394] [2019-11-20 08:54:17,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 08:54:17,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:54:17,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 08:54:17,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:54:17,432 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 8 states. [2019-11-20 08:54:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:54:18,729 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2019-11-20 08:54:18,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:54:18,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-20 08:54:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:54:18,741 INFO L225 Difference]: With dead ends: 144 [2019-11-20 08:54:18,741 INFO L226 Difference]: Without dead ends: 138 [2019-11-20 08:54:18,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:54:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-20 08:54:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 76. [2019-11-20 08:54:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-20 08:54:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2019-11-20 08:54:18,789 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 11 [2019-11-20 08:54:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:54:18,789 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2019-11-20 08:54:18,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 08:54:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2019-11-20 08:54:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 08:54:18,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:54:18,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:54:18,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:18,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr16REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 08:54:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:54:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035193, now seen corresponding path program 1 times [2019-11-20 08:54:18,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:54:18,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [125907184] [2019-11-20 08:54:18,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:54:19,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:54:19,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:54:19,282 INFO L343 Elim1Store]: treesize reduction 93, result has 20.5 percent of original size [2019-11-20 08:54:19,283 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2019-11-20 08:54:19,284 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:54:19,311 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:54:19,313 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 08:54:19,313 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:33 [2019-11-20 08:54:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:54:19,352 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:54:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:54:19,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125907184] [2019-11-20 08:54:19,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:54:19,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 08:54:19,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454764007] [2019-11-20 08:54:19,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:54:19,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:54:19,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:54:19,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:54:19,384 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 4 states. [2019-11-20 08:54:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:54:19,631 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2019-11-20 08:54:19,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:54:19,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 08:54:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:54:19,633 INFO L225 Difference]: With dead ends: 75 [2019-11-20 08:54:19,633 INFO L226 Difference]: Without dead ends: 75 [2019-11-20 08:54:19,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:54:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-20 08:54:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-11-20 08:54:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-20 08:54:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2019-11-20 08:54:19,652 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 11 [2019-11-20 08:54:19,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:54:19,653 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2019-11-20 08:54:19,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:54:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2019-11-20 08:54:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 08:54:19,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:54:19,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:54:19,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:19,864 INFO L410 AbstractCegarLoop]: === Iteration 3 === [knapsackErr6REQUIRES_VIOLATION, knapsackErr17REQUIRES_VIOLATION, knapsackErr7REQUIRES_VIOLATION, knapsackErr5REQUIRES_VIOLATION, knapsackErr16REQUIRES_VIOLATION, knapsackErr14REQUIRES_VIOLATION, knapsackErr4REQUIRES_VIOLATION, knapsackErr15REQUIRES_VIOLATION, knapsackErr2REQUIRES_VIOLATION, knapsackErr13REQUIRES_VIOLATION, knapsackErr3REQUIRES_VIOLATION, knapsackErr0REQUIRES_VIOLATION, knapsackErr1REQUIRES_VIOLATION, knapsackErr12REQUIRES_VIOLATION, knapsackErr10REQUIRES_VIOLATION, knapsackErr11REQUIRES_VIOLATION, knapsackErr9REQUIRES_VIOLATION, knapsackErr18REQUIRES_VIOLATION, knapsackErr8REQUIRES_VIOLATION, knapsackErr19REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 08:54:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:54:19,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1853882236, now seen corresponding path program 1 times [2019-11-20 08:54:19,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:54:19,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [585788887] [2019-11-20 08:54:19,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:54:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:54:20,208 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 08:54:20,208 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 08:54:20,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:54:20,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:54:20 BoogieIcfgContainer [2019-11-20 08:54:20,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:54:20,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:54:20,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:54:20,431 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:54:20,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:16" (3/4) ... [2019-11-20 08:54:20,434 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 08:54:20,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0e215875-3357-412d-beec-ae1ed3e795b3/bin/uautomizer/witness.graphml [2019-11-20 08:54:20,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:54:20,493 INFO L168 Benchmark]: Toolchain (without parser) took 5934.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:54:20,493 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:54:20,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -213.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-20 08:54:20,494 INFO L168 Benchmark]: Boogie Preprocessor took 106.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:54:20,495 INFO L168 Benchmark]: RCFGBuilder took 1007.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-20 08:54:20,495 INFO L168 Benchmark]: TraceAbstraction took 4092.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:54:20,496 INFO L168 Benchmark]: Witness Printer took 60.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:54:20,498 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 660.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -213.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 106.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1007.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4092.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 60.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) VAL [M=2147483648, N=537395201] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=537395201] [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={2147475463:0}, __builtin_alloca (M * sizeof(int))={2147479554:0}, __builtin_alloca (N * sizeof(int))={2147479555:0}, __builtin_alloca (N * sizeof(int))={2147479559:0}, best={2147479554:0}, cost={2147475463:0}, i=0, M=1, N=537395201, size={2147479559:0}, val={2147479555:0}] [L540] COND TRUE i < N VAL [__builtin_alloca (M * sizeof(int))={2147475463:0}, __builtin_alloca (M * sizeof(int))={2147479554:0}, __builtin_alloca (N * sizeof(int))={2147479555:0}, __builtin_alloca (N * sizeof(int))={2147479559:0}, best={2147479554:0}, cost={2147475463:0}, i=0, M=1, N=537395201, size={2147479559:0}, val={2147479555:0}] [L542] size[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 27 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 146 SDslu, 367 SDs, 0 SdLazy, 170 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 62 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 2640 SizeOfPredicates, 14 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...